LK PressPex Eco 188 26 68 User manual

General
All water contact parts of LK PressPex are manu-
factured from dezincication-resistant brass.
NOTE!
When installed in radiator systems, ttings
are to be protected against direct contact
with concrete since this may contain ammo-
nia residues. Therefore, use the LK Fitting
Protection or similar.
The type-approval for LK PressPex and LK
PressPex Eco applies only to joining of LK PE-X
and LK PAL Universal Pipes.
LK PressPex couplings are also type-approved
for PEM pipes in dimensions 16, 20, 25 and 32
mm with pipe dimensions according to Table 1.
The couplings must not be placed in the ground.
This range includes both PressPex couplings for
universal (gray plastic ring) and PV (red plastic
ring) which corresponds to the dimension of the
PEM pipe.
Table 1.
Pipe
dimension
Refers to couplings
for pipe dimensions
Colour on the
plastic ring
(coupling)
16 16 x 2,0 Grey
20 20 x 2,0 Red
25 25 x 2,3 Red
32 32 x 3,0 Grey
LK PressPex is designed for use in tap water, heat -
ing and cooling systems. The tting must not be
lubricated. The installation must be carried out in
accordance with Industry Regulations Säker Vat-
teninstallation (safe water installation).
Pressure and temperature range:
• LK Press Fittings are approved for the same
pressure and temperature ranges as the LK
Universal Pipes, that is 1,0 MPa at +95ºC.
• When using a PressPex tting with brass
at end (EN 12164, CW602N), the at end is
joined according to the tting manufacturer’s
instructions.
• For LK >B<Press and LK Conex, there are
clear instructions under respective product
group’s assembly instructions.
Assembly instructions for LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
Assembly instructions | LK PressPex and PressPex Eco
LK Tappvattensystem är godkänt
enligt Nordtestmetoden NT VVS 129.
TABLE OF CONTENTS
General 1
Location of joints 2
Leakage indication Press ttings 2
Marking and material 3
Range 3
Press tools 3
Press jaws 4
Assembly instructions 4
Tightness testing 7
Excess material / recycling 8
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Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
Leakage indication Press fittings
Starting 1 July 2012 Sweden’s plumbing safety
regulations requires that press ttings must have
leakage indication. An unpressed tting must
leak in a tightness test. According to the industry
regulations press ttings are tested as follows:
• A radial press tting with internal or external
seal must be designed in such a way that an
unpressed tting leaks in a tightness test.
The requirement applies to all dimensions of
radial press ttings with internal or external
seal.
• Dimensions up to and including 75 must be
tested and approved by an accredited testing
organization in accordance with section 12.14
of DVGW Arbeitsblatt 534.
All LK Systems press ttings from dimension
16 mm up to 75 mm are approved and meet the
above requirements. See also the section Tight-
ness testing.
NOTE!
Press ttings and systems that meet the
requirements are displayed on www.saker-
vatten.se
NOTE!
Only press machines with compression
forces as specied in the section Press tools
may be used.
Location of joints
NOTE!
Joints for tap water should be mounted
housed in a LK Manifold Cabinet UNI with
leakage indication towards an area with oor
drain or waterproof ooring.
NOTE!
Joints should be located in rooms with
waterproof ooring so that they are inter-
changeable and any leaking water can
easily be detected.
If the LK Manifold Cabinet UNI cannot be used
• If LK Manifold Cabinet UNI cannot be used,
the areas for pipe ttings in enclosures,
installation shafts or tting cabinets should
have waterproof bases (minimum height 50
mm) and be tted with leakage indication
with sufcient capacity that is, a minimum of
20 mm internal diameter.
• The outlet of the leakage indication should
be in a room with oor drain or waterproof
ooring. The outlet should not be located
closer than 60 mm from the waterproong of
the oor or the adjacent wall.
• Installation shafts with room for ttings or
tting cabinets should have a service open-
ing large enough for repairs or replacement
of all joints.
• The service opening should not be located in
wet zone 1 if the hatch is not tested and ap-
proved against the waterproong of the wall
(NOT provided by LK Systems).
PE-X pipe-in-pipe system (RiR)
RiR, with components included according to In-
stallation solutions NT VVS 129, is tested and
approved according to NT VVS 129 and Sintef
Test Method for conduits. Read more:
www.lksystems.se/en (support/documenta-
tion/LK Universal/assembly instructions)
2 (8)

NOTE!
The pipe dimension for which the tting is
designed is stamped on the housing of the t-
ting, or on the press socket, e.g. LK 25. This
is followed by a code for the year of manufac-
ture and a batch number for traceability.
Marking of LK PressPex ttings.
Range
LK PressPex is a complete tting system for
LKPE-X and LK PAL Universal pipes. The sys-
tem includes T-pieces, elbows, straight ttings,
reducers, transition ttings for transition other
pipe materials, etc. The full PressPex range is pre-
sented in the LK Universal product catalogue, read
more at the link. www.lksystems.se/en (Products/
LK Universal/products/press ttings/ttings)
Press tools
• A press machine with suitable jaws is always
required for joining press ttings. Press ma-
chines are available with battery or AC power
adapter.
• LK’s press machines are all hydraulic with
a compression force between 32kN to 40kN
throughout the compression process.
• LK Minipress is designed specically to be
lightweight, and therefore has an axial force
of only 15kN or 19kN and customized mini
jaws with largest dimension of 32 mm or
40mm.
• All batteries are environmentally friendly Li-
ion type.
NOTE!
Correct compression force is an absolute re-
quirement for proper pressing. Other makes
of press machines can be used provided
that the compression forces can achieve
32–40kN and that they are compatible with
the press jaws.
Different makes of press jaws
Different makes of press jaws can be used provid-
ed they are designed for the LK PressPex tting.
This is shown by the letter/number combination
indicated on the jaws.
A
D
E
C
B
A. Fitting housing of dezincication-resistant brass.
B. Grey plastic ring ensuring that the aluminium layer in
the LK PAL Universal Pipe does not come in contact
with the brass material in the tting. The plastic ring
has an opening for visual inspection to ensure that
the pipe end has been pushed entirely to the bottom
of the tting.
C. Press socket of stainless steel.
D. O-ring 1, located under 1st press groove.
E. O-ring 2, located between 1st and 2nd press groove.
Marking and material
• All LK PressPex ttings are designed for
LKPE-X and LK PAL Universal Pipes, and
they are tted with a stainless steel press
socket and a grey plastic ring.
• The housing of LK PressPex ttings is made
of nickel-plated dezincication-resistant
brass up to dimension 32. Fitting dimensions
larger than 32 mm are made of unplated dez-
incication-resistant brass.
• The support sleeve of the tting has EPDM
O-rings.
• The dimension is specied on the packag-
ing, e.g. AX25, indicating that the tting is
designed for LK PE-X or LK PAL Universal
Pipes with a dimension of 25×3.5.
Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
3 (8)

Machines used in a tough working environment
Press machines are used in a tough working envi-
ronment. Therefore, it is important that they are
serviced and maintained in accordance with the
instruction manual supplied. The performance of
the machines are always checked in our service
workshop. A separate calibration with protocol
can also be ordered.
NOTE!
Always follow the instructions from manufac-
turer of the press machine and jaws. Always
follow the steps in this assembly instruction.
Press machines in dierent versions.
Press jaws
Press jaws with a specic prole must be used
for LK PressPex ttings. There are several makes
of press jaws. The correct type is indicated by a
code on the jaws according to the manufacturer’s
instructions In case of doubt, we recommend using
LK’s jaws marked LK or prole TH.
Visual check of press jaws
Like all tools, the press jaws should be maintained
and calibrated regularly. They should be stored in a
dry place and all movable parts must be lubricated.
When fully closed, there should be no visible gap between
the jaws. Any gap indicates wear in the movable jaw parts,
and jaws need to be replaced.
Safety instructions
For safety instructions and other user instructions,
please read the user instructions supplied with the
press machine.
Assembly instructions
Joining of LK PE-X and PAL Universal Pipes must
be carried out according to the following steps.
Step A. Perpendicular cutting
NOTE!
Sawing tools must not be used for cutting.
See LK product range for suitable tools.
www.lksystems.se/en (Products/LK Univer-
sal/products/tools/cutters).
NOTE!
LK PE-X Universal Pipe and LK PAL Univer-
sal Pipe in smaller dimensions are cut most
easily with pipe cutters. Larger dimension LK
PAL Universal Pipes should be cut with pipe
cutters tted with cutting wheels for plastic
pipes.
1. Cut the pipe perpendicularly.
Cutting performed with a pipe cutter.
Cutting done with a pipe cutter tted with plastic tted
with cutting wheels for plastic pipes.
Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
4 (8)

Step C. Check the O-rings
1. Check that the tting is free of dirt and
that the O-rings are in position.
Step D. Insert the pipe into the fitting
NOTE!
The deburring of the pipe ends in Step B and
the rotating of the tting in Step D are highly
essential operations to ensure the O-rings
are not displaced or damaged, which will
cause leakage in the tting.
1. Push the deburred pipe end into the tting
up to the rst O-ring and then, twisting it
slightly, push it to the bottom of the tting.
2. Check through the sight-hole in the grey
plastic ring that the pipe is pushed fully
into the tting. In cases where the tting is
installed in a pipe that has been in opera-
tion, the pipe must be cleaned internally.
Insertion and twisting of the deburred plastic pipe.
Step B. Deburring
NOTE!
The deburring of the pipe ends in Step B and
the rotating of the tting in Step D are highly
essential operations to ensure the O-rings
are not displaced or damaged, which will
cause leakage in the tting.
NOTE!
LK PE-X Universal Pipe can be deburred
using the same type of pipe reamer used on
copper pipes.
LK PAL Universal Pipes must be calibrated
and deburred using an LK PressPex Calibra-
tion Tool F9.
LK PE-X and PAL Universal Pipes must be de-
burred inside to prevent damage or displacement
of the O-rings, which will inevitably result in a
leaking joint. After deburring, the pipes must be
cleaned from any shavings.
1. Perform a deburring on the inner side of
the pipe-end.
2. Clean the pipe of any shavings after the
deburring has been performed.
LK PE-X Universal Pipe can be deburred using the same
type of pipe reamer used on copper pipes.
LK PAL Universal Pipes must be calibrated and deburred
using an LK PressPex Calibration Tool F9.
Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
5 (8)

Step F. Automatic compression
NOTE!
The press jaws must be perpendicular to the
tting during the compression to ensure a
correct joint.
NOTE!
Machines with manual return must be
checked to ensure that the press jaws are
fully compressed before the return movement
commences. Any gap at the front of the jaws
may be due to solid residue between the
jaws; this will prevent proper compression.
The jaws will return automatically once full
press force has been achieved.
1. Check that the press jaws have been cleaned
and the lock pin is fully inserted into the
machine’s bracket.
2. Position the press tool correctly and start
the automatic compression.
Compression with press jaws.
3. Compression joints must be checked to
ensure they have been correctly compressed
by inspecting and certifying that all ttings
are marked. This should be incorporated in
the self-test report.
Any gap at the front of the jaws may be due to solid residue
between the jaws; this will prevent proper compression.
LK PressPex ECO Repair Coupler as an alternative
LK PressPex Repair Coupler is used for joining
LK PAL pipes, as well as LK PE-X Universal pi-
pes The coupling is equipped with a handle that
facilitates insertion and adjustment of the pipe to
the correct insertion depth.
When the pipe is inserted it is visible through
the transparent casing on the coupler. The pipe
should be clearly visbile before any compression
is performed. See the examples in the illustration.
In those cases where the coupler is installed on
pipes that are in use, make sure the pipes are pro-
perly cleaned on the inside before the coupler is
installed.
LK PressPex ECO Repair Coupler with a transparent
casing.
Step E. The insertion depth
1. Mark the insert depth. This makes it simple
to check and ensure that the pipe has not
slipped out of the tting before carrying
out compression.
The insertion depth is marked with a pen.
Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
6 (8)

Tightness testing
Tightness test of press fittings
In order to check that a press tting is compressed,
a tightness test must be performed before the nal
pressure test.
1. Pressurize the pipe to a test pressure of
3 bar for at least 30 minutes. All joints must
be inspected. The pressure may not drop
during the test period.
NOTE!
This tightness test does not replace the man-
datory pressure and tightness test described
below.
Tap water and heating pipes
1. In pressure and tightness testing of pipes
carrying water, the pipe must be slowly
lled with water up to the test pressure.
The tap water system must be tested using
water of drinking water quality.
2. The pipes must be completely full of water
and must have been air bled. In order to
facilitate bleeding, the pipe should be lled
from its lowest point.
3. The temperature difference between the
current room temperature and the water
temperature may not exceed 10°C.
After pressure and tightness testing of the tap
water system with water, the system should be
operational within seven days or completely
drained of water in order to reduce the risk of
bacterial growth.
Guidance
During tightness testing all joints should be
inspected for “invisible leaks”. This inspection
is important because such leaks cannot always
be identied by the manometer on the pressure
equipment.
Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
Pressure and tightness testing of plastic pipe
systems and pipe systems involving a mix of
plastic and metal pipes
Step A. Pressurise the system for 30 minutes
1. Pressurise the pipe system to a test pressure
of 1.43 × the calculation pressure for at least
30 minutes. The test pressure must be 14.3
bar for tap water systems and 8.6 bar for
heating systems.
2. The test pressure shall be maintained for 30
minutes.
Step B. A fast reduction of the test pressure
1. After 30 minutes, reduce the test pressure
quickly to 7.5 bar for tap water systems
and 4.5 bar for heating systems.
2. This pressure must be maintained for at
least 90 minutes. The pressure should
normally increase slightly during the test
period. The entire pipe system must be
inspected.
Pressure and tightness testing with air
Pressure and tightness testing with air or another
gas must be performed in accordance with the
requirements of AFS 2006.
Tightness testing with air, low pressure
A method developed by VVS Företagen (The
Swedish Association of Plumbing and HVAC
Contractors) and Säker Vatten AB
If there is a risk for freezing or bacterial growth
before a piping system is put into operation, it
is impractical to perform the tightness test with
water. Industry Regulations Säker Vatteninstal-
lation displays on its website www.sakervatten.
se how a simplied tightness test with air can be
performed.
NOTE!
This method may under no circumstances be
carried out with a higher test pressure than
1.1 bar and it does NOT replace the manda-
tory tightness test.
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Assembly instructions | LK PressPex and PressPex Eco
EN.29.C.32.2022-03-14
Excess material / recycling
• LK does not take back any packaging materi-
al or excess material except for materials
in unopened and undamaged packaging.
• No components in the LK Universal System
are classied as hazardous waste.
• Residual material from LK PE-X and
LK PAL Universal Pipes is treated as
combustible waste.
LK Universal System, with type-approved prod-
ucts, is ideal for this procedure. LK’s type-approv -
als can be used as certicates showing the prod-
ucts are tested for pressure resistance. LK Floor
Heating Pipes (6 or 10 bar) can also be used for
this method together with LK Floor Heating Mani-
folds as they are manufactured for a pressure of
6bar. Manufacturer certicates are obtainable from
LKSystemsAB.
Carefully follow the instructions in the Säker
Vatteninstallation document “Förenklad täthet-
skontroll med luft för vissa rörsystem” (Simplied
tightness test with air for certain piping systems).
Use testing protocols that can be downloaded at
www.sakervatten.se.
NOTE!
After nishing the tightness test, the system
must immediately be depressurized.
Existing tap water and heating systems
Guidance
• Existing tap water systems should be pres-
sure and tightness tested with the existing
water pressure of the tap water system.
• Existing heating systems should be pressure
and tightness tested with the existing operat-
ing pressure of the heating system.
Checklist
1. Appoint a qualied person who will lead
the work and set up testing protocol.
2. Ensure that the installation, and all the fas-
teners, xings, pipe supports, etc., are able
to withstand the loads of the system.
3. Freezing risks must be eliminated.
4. All joints must be visible and dry.
5. Instrumentation must function properly.
LK Systems AB, Box 66, 161 26 Bromma, Sweden | www.lksystems.se/en
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